Intermediate Mathematics - The normal curve
The normal curve
A series of tests was given to a large number of students and the results
of these tests were combined to obtain a Verbal Aptitude score for each
For the whole group it was found that:
Mean = 595, and
Standard Deviation = 73.
Samples of increasing size (200, 500, 1000, and 5000) were taken and the
scores for each sample graphed as a histogram.
As the sample size increased the distribution became more symmetrical and
approached the shape of the normal curve.
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